1. Central Research Laboratory, Sanwa Kagaku Kenkyusho Co., Ltd., Hokusei-cho, Inabe-gun, Mie 511-0406, Japan
2. Department of Cardiovascular Medicine, Kyushu University Graduate School of Medicine, Higashi-ku, Fukuoka 812-8582, Japan
3. Department of Molecular Preventive Medicine, School of Medicine, and CREST, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan